Mobility

Performance of Third Generation Wireless Networks

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Executive Summary

In this paper, the authors make two main contributions. First, one is optimizing TCP performance over the 3G wireless networks is adapting to the significant delay and rate variations over the wireless channel. They present Window Regulator algorithms that use the receiver window field in the acknowledgment packets to convey the instantaneous wireless channel conditions to the TCP source and an ack buffer to absorb the channel variations, thereby maximizing long-lived TCP performance. Second, they present a wireless channel and TCP-aware scheduling and buffer sharing algorithm that reduces the latency of short flows while still exploiting user diversity for a wide range of user and traffic mix.

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